Christian Broberg cbroberg

LLM Wiki v2

A pattern for building personal knowledge bases using LLMs. Extended with lessons from building agentmemory, a persistent memory engine for AI coding agents.

This builds on Andrej Karpathy's original LLM Wiki idea file. Everything in the original still applies. This document adds what we learned running the pattern in production: what breaks at scale, what's missing, and what separates a wiki that stays useful from one that rots.

What the original gets right

The core insight is correct: stop re-deriving, start compiling. RAG retrieves and forgets. A wiki accumulates and compounds. The three-layer architecture (raw sources, wiki, schema) works. The operations (ingest, query, lint) cover the basics. If you haven't read the original, start there.

If you are seeing Mongo soft rlimits warnings in your logs, or a WARNING: soft rlimits too low. Number of files is 256, should be at least 1000 when you login to mongo shell via mongo from the commandline, or any mysterious/unexplained mongo connection errors... follow this how-to exactly and it will resolve the issue for you.

(Source of this how to found at basho/basho_docs#1402)

First file: sudo vi /Library/LaunchDaemons/limit.maxfiles.plist

...containing:

	aws lightsail create-key-pair \
	--key-pair-name 'lightsail_demo' \
	--query 'privateKeyBase64' \
	--output text > 'demo.key'
	chmod 700 "demo.key"

	class MouseMover extends Component {

	renderMouseMovement = ({ x, y }) => {
	return <Text>The mouse position is ({x}, {y})</Text>
	}

	render() {
	return (
	<MouseMove render={this.renderMouseMovement} />
	)

	<!DOCTYPE html>
	<html>
	<head>
	<style>
	.switch {
	position: relative;
	display: inline-block;
	width: 90px;
	height: 34px;
	}

	const rand = Math.random() < 0.5
	const throwError = rand // random boolean

	// validation, error handling, boolean
	let validator = {
	set: function(obj, prop, value) {
	if (prop === 'age') {
	if (!Number.isInteger(value)) {
	if (throwError) {
	throw new TypeError('The age is not an integer')